Differential unwind or rewing apparatus



J ly 9, 1968 H. F. DALGLISH DIFFERENTIAL UNWIND OR REWIND APPARATUS 3 Sheets-Sheet 1 Filed Oct. 7, 1966 2 m Wdm m #3 F m V w W E 5 H 5 M W w -:W 2 ry 5 x Q 0 4 1 K a 1 M July 9, 1968 H. F. DALGLISH 3,391,876

DIFFERENTIAL UNWIND OR REWIND APPARATUS Filed Oct. 7, 1966 3 Sheets-Sheet 2 INV ENT OR Hrnaser F DAL az /s/1 TTORNEY July 9, 1968 H. F. DALGLISH DIFFERENTIAL UNWIND OR REWIND APPARATUS 3 Sheets-Sheet 5 Filed Oct.

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dORNEY ZZZ United States Patent 3,391,876 DIFFERENTIAL UNWIND OR REWIND APPARATUS Herbert F. Dalglish, 284 Cherokee Ave, St. Paul, Minn. 55107 Filed Oct. 7, 1966, Ser. No. 535,029 7 Claims. (Cl. 242-563) This invention relates to an improvement in differential unwind or rewind apparatus and deals particularly with a means of winding or unwinding a plurality of webs on to or off from a single shaft.

There are many times when it is desirable to feed a plurality of webs on to or off from a single shaft.

There are many times when it is desirable to feed a plurality of webs through a machine simultaneously. For example, in multicolor printing presses which print a web of paper or paperboard, there are many instances when the web being printed is not the full width of the press, and the remainder of the width of the press is not productive. While a wide web of paperboard could be used for printing two different jobs simultaneously, in many instances the paperboard which is used for one job is not the same as that used for another. In the past, it has been common practice to run such jobs consecutively rather than simultaneously. There are also many instances when it is desirable to wind two different webs simultaneously. Normally, in the past it has been necessary to wind one roll on one shaft and the other roll on a separate shaft, particularly where the rolls are of different diameter. For example, when the material such as paperboard of one of the webs is thicker than the other, the diameter of the roll being wound increases at a greater rate than the diameter of the other roll, so that the two rolls can not be wound at the same speed by a single winding mechanism.

It is an object of the present invention to provide a shaft upon which a plurality of webs may be wound or unwound, and in providing a separate drive means, or separate friction braking means, for each of the rolls. As a result, rolls of the same or of different diameter may be wound upon, or unwound from, the same shaft regardless of a difference in diameter between the two rolls.

These and other objects and novel features of the present invention will be more clearly and fully set forth in the following specification and claims.

In the drawings forming a part of the specification:

FIGURE 1 is an elevational view of a supported shaft supporting a pair of rolls of paperboard or other material and upon which two webs are to be wound.

FIGURE 2 is a side elevational view of the structure shown in FIGURE 1.

FIGURE 3 is a sectional View through a portion of one of the roll supports.

FIGURE 4 is a sectional view through the chuck on the line 44 of FIGURE 3.

FIGURE 5 is an elevational view of a shaft support and shaft supporting a pair of rolls from which two webs are to be simultaneously unwound.

FIGURE 6 is a side elevational view of the structure shown in FIGURE 5.

FIGURE 7 is a view sectionally through one of the rolls supporting chucks, the position of the section being indicated by the line 77 of FIGURE 5.

FIGURE 8 is a side elevational view of the chuck indicated in FIGURE 7, the position of the view being indicated by the line 8-8 of FIGURE 7.

FIGURE 9 is a side elevational view of a clamping collar which may be used to hold one of the rolls from axial movement.

3,391,876 Patented July 9, 1968 FIGURE 10 is an elevational view of a roll supporting shaft indicating three separate rolls supported upon the same shaft and designed to be individually wound or unwound therefrom.

FIGURE 11 is a side elevational view of the structure indicated in FIGURE 10.

FIGURE 12 is an elevational view of one of the chucks used in the structure indicated in FIGURES 10 and 11.

FIGURE 13 is an end elevational view of the chuck indicated in FIGURE 12.

FIGURE 14 is a sectional view through a chuck of the type used in the other end of the roll from that supported by the chuck shown in FIGURES l2 and 13.

FIGURE 1 of the drawings diagrammatically illus trates a wind assembly for winding two separate webs upon a single shaft. In general, the wind assembly A includes a pair of spaced shaft supporting standards 10 and 11 which are held in fixed spaced relation by a connecting member 12. A shaft 13 is slidably supported in suitable bearings in the standards 10 and 11, the shaft being normally held from axial movement by any suitable means not illustrated in the drawings, but being axially movable when desired for applying and removing rolls such as 14 and 15, and the cores such as 16 upon which the webs are usually wound. The cores 16 are often heavy tubes of paperboard or the like, although they may be made of tubular steel or other material if desired.

The chucks which are used to support the cores are preferably of the type illustrated in United States Patent 3,263,938, issued Aug. 2, 1966 for Core Clutch. As is diagrammatically illustrated in FIGURES 3 and 4 of the drawings, the core clutches 17 may be provided with a series of angularly spaced generally rectangular slots 19 which are parallel to the axis of the chuck, and which contain elongated bars 20 which are of generally triangular cross-section. The bars 20 are held in the grooves 19 by an endless resilient band 21 which extends through notches 22 intermediate the ends of the triangular bars 20 and through a peripheral groove 23 in the body of the chuck. When the chuck is being inserted into, or removed from, the end of a core 16, one apex between adjoining sides of each triangular bar 20 projects but slightly beyond the diameter of the chuck body. However, a relative rotation between the chuck body and the core causes the bars to pivot in their grooves, causing the apex of each bar which projected but slightly from the chuck body to project outwardly a greater distance, firmly gripping the core and holding the core from rotation relative to the chuck.

In the core chuck 17 illustrated in FIGURE 3 of the drawings, the chuck includes a cylindrical sleeve 24 of steel or other suitable material having the angularly spaced grooves 19 therein. One end of the sleeve 24 is grooved as indicated at 25 to accommodate a sleeve bearing 26 of brass or other suitable material, the internal diameter of which is slightly less than the internal diameter of the sleeve 24. The opposite end of the sleeve 24 is also grooved as indicated at 27 to accommodate a second hearing 29, one end 39 of which is accommodated in the groove 27. The bearing 27 is provided with a short bearing portion 31 which is of the same diameter as the sleeve 24, and which forms a short continuation of the sleeve 24. A peripheral flange 32 of somewhat larger diameter is provided at the outer end of the bearing 29. The purpose of this arrangement is to provide a bearing surface 33 normal to the axis of the chuck which may ride against the end of a similar chuck on the shaft 13 supporting a different roll.

The outer end of each core may be supported by a chuck 34 of the type illustrated in FIGURES 7 and 8 of the drawings. The chuck 34 includes a sleeve 35 of steel or other suitable material having a cylindrical outer surface and having angularly spaced longitudinally extending generally rectangular grooves 36 therein for supporting the generally triangular bars 37 which form the teeth designed to grip the core 16. The teeth 37 are held in place by an endless resilient ring 48 which passes through transverse grooves 40 in the bars or teeth 37 and which lies in a peripheral groove 41 in the chuck body 35.

One end of the sleeve 35 is internally grooved as indicated at 42 to accommodate a sleeve bearing 43. The other end of the sleeve 35 is provided with an integral peripheral flange 44 designed to abut against the end of the core 16. A groove 45 is provided extending into the body of the chuck adjoining the flange 44, this groove 45 separating about one-third of the flange 44 from the remainder of the chuck body 35. The flange 44 is slit as indicated at 46 on a radial plane through the axis of the chuck. An aperture 47, the axis of which is normal to the slot 46 intersects the slot 46, and the portion of the aperture 47 on one side of the slot 46 is threaded as indicated at 49. A set screw 50 extends through the portion of the aperture 47 on the opposite side of the slot 46 and is threaded into the threaded portion of 49. The slot 45 renders the flange 44 sufliciently flexible and resilient to permit the set screw 50 to clamp the chuck onto the shaft 13 if it is so desired.

The flanged end of the chuck 34 is internally grooved as indicated at 51 to accommodate a bearing sleeve 52 of brass or other material suitable for bearings. The bearing 52 may be longitudinally slotted as indicated at 53, the slot 53 being aligned with the slot 46 and permitting the bearing sleeve to be compressed or reduced in diameter slightly by the tightening of the set Screw 50.

As is indicated in FIGURE 1 of the drawings, the shaft 13 supports two chucks 17 in back to back relation, one of which extends into an end of the roll 14, and the other of which extends into the roll 15. A chuck 34 extends into the outer end of the roll 15, and the set screw 50 of this chuck is tightened to hold the chuck from rotation relative to the shaft 13. A similar chuck 34 is provided in the outer end of the roll 14, but the set screw of this chuck is not tightened to the extent necessary to secure the chuck to the shaft. As a result, the roll 14 may rotate independently of the shaft 13.

In order to hold the rolls in fixed relation upon the shaft, a clamping collar 54 which may be of the type indicated in FIGURE 9 of the drawings may be secured on the shaft 13. The clamping collar 54 is split as indicated at 55 on a radial plane through the axis of the collar, and an aperture 56 intersects the slot 55 on an axis normal to the opposed faces of the slot 55. A set screw 57 extends through a portion of the aperture and is threaded into the portion of the aperture 56 on the opposite side of the slot 55. The collar is notched as indicated at 59 to accommodate the head of the set screw 57.

As indicated in FIGURES 1 and 2 of the drawings, a pulley 60 is mounted upon an end of the shaft 13. The pulley 60 is connected to a cooperable pulley 61 on a drive mechanism 62 by a belt 63. The drive mechanism 62 provides the means of driving the shaft 13, and the roll 15, the supporting chucks of which rotate in unison with the shaft 13. An external drive mechanism indicated in general by the numeral 64 is designed to drive the roll 14. As is diagrammatically illustrated, the mechanism 64 may include a supporting shaft 65 including a belt pulley 66 and upon which is mounted an arm 67 supporting an idle belt pulley 69. A third pulley 70 is mounted upon a parallel shaft 71. A drive means is provided for driving the shaft 65, and an endless belt 72 extends about the pulleys 66, 69 and 70, and engages about the periphery of the roll 14. By this means, the roll 14 may be externally rotated relative to the shaft 13. As the external drive devices 64 are not in themselves novel, the detail of construction is not disclosed.

From the foregoing description, it will be evident that the two rolls 14 and 15 mounted upon the same shaft 13 may be simultaneously wound up, one being Wound by the drive mechanism 62 and the other roll 14 being externally driven by the device 64. The speed of rotation may vary. For example, if the two webs are traveling at the same rate of speed, they may be rolled to form the rolls 14 and 15 simultaneously, even though the diameter of the two rolls is materially difierent.

FIGURES 5 and 6 of the drawings disclose an arrangement where a tension is individually applied to the rolls as a web is being unrolled from the two rolls 74 and 75 mounted upon a common shaft 76. The shaft 76 is rotatably supported by standards 77 and 79, and a friction brake mechanism which is indicated diagrammatically at 80 may supply the desired amount of friction to resist the rotation of the shaft 76. The chuck 34 extending into the outer end of the roll 75 is secured for rotation with the shaft 76 so that the tension upon the web issuing from the roll 75 may be adjusted by adjustment of the brake mechanism 80.

A pair of brackets 81 are secured to the standards 77 and 79 and support a transverse shaft 82 in parallel relation to the shaft 76. A flexible belt 83 is anchored at one end to the shaft 82, and is of proper length to extend partially about the roll 74 on the shaft 76. As is indicated, a tension is provided in the belt 83 by weights 84 or any other suitable means so that friction is applied to the surface of the roll 74 tending to resist rotation of the roll. Thus individual adjustable tension may be provided for each roll tending to resist the rotation thereof.

The structure illustrated in FIGURES 10 through 14 of the drawings is illustrative of the manner in which a greater number of rolls may be individually wound on a common shaft. FIGURE 10 illustrates a winder C including a pair of upright standards 85 and 86 connected by a platform 87. The standards 85 and 86 support a shaft 89 having a pulley 90 near one end thereof. Th pulley 90 is connected to a cooperable pulley 91 by means of a belt 92. The pulley 91 is a part of a drive unit 93 which is designed to rotate the pulley 91 at a predetermined speed.

The shaft 89 is shown as supporting three rolls of paperboard, or other suitable material. The roll 96 is supported at its outer end by a clutch 34 which is secured to the shaft 89 in the manner described to rotate in unison therewith. The other end of the roll 96 is supported by a clutch 17 which engages a similar clutch 17 in the adjoining end of the roll 95. The other end of the roll is supported by a chuck 97 of the type illustrated in FIGURES 12 and 13 of the drawings.

The chuck 97 is essentially the same as the previously described chucks, with the exception of the fact that a pulley 99 is substituted for the flange 44 of the clutch 34. The chuck 97 has a cylindrical outer surface throughout the major portion of its length, and angularly spaced slots 100 are provided in its outer surface, the slots 100 extending parallel to the axis of the chuck. The slots 100 are designed to accommodate triangular bars or teeth 101 which are held in place by endless resilient bands 102 in the manner which has been described. Bearing sleeves 103 and 104 are provided within the body of the chuck, in the manner which has been described.

As indicated in FIGURE 10 of the drawings, the pulley 99 of the chuck 97 in the end of the roll 95 is connected by a belt 105 to a cooperable pulley 106 on a drive unit 107 on the platform 87. This permits the roll 95 to be rotated independently of the other rolls.

The inner end of the roll 94 is supported by a chuck 17 similar to that previously described. The outer end of the roll 94 is supported by a chuck 97, the pulley 99 of which is connected by a belt 109 to a cooperable pulley 110 on a third drive unit 111. As a result, all

of the rolls may be independently wound at a suitable speed while supported on the same shaft.

FIGURE 14 of the drawings indicates a modified form of chuck which is generally similar to the chuck 17. The chuck 112 includes an elongated sleeve 113 having a generally cylindrical outer surface and a flange 114 at one end thereof extending outwardly therefrom. The body 113 is provided with the longitudinally extending angularly spaced notches 115 of the previous chucks. The ends of the sleeve 113 are internally grooved as indicated at 118 and 116 respectively to accommodate bearing sleeves 117 and 119. The major feature of difference between this and the chuck 17 lies in the fact that the flange 114 is made of steel or similar material rather than of brass, and thus does not have the bearing surface at the end. However, this type of chuck is somewhat less expensive to produce than is the chuck 17, and may be used when no great amount of end thrust is experienced.

While the cores of the various rolls have been illustrated as of equal diameter, rolls having cores of different diameter may be used by using appropriately sized chucks. Furthermore, while the mechanism 64 has been described as a drive mechanism, it may likewise comprise a means of applying friction if desired.

In accordance with the Patent Oflice statutes, I have described the principles of construction and operation of my improvement in differential unwind or rewind apparatus and while I have endeavored to set forth the best embodiment thereof, I desire to have it understood that changes may be made within the scope of the following claims Without departing from the spirit of my invention.

1 claim:

1. A differential wind and rewind apparatus including:

a shaft,

means supporting said shaft on a substantially horizontal axis,

a pair of roll supporting chucks on said shaft and adapted to support a roll with the chucks extending into opposite ends thereof,

teeth on said chuck adapted to engage said roll to prevent relative rotation therebetween,

means securing one of said chucks to said shaft for rotation therewith,

a second pair of opposed roll supporting chucks adapted to extend into opposite ends of a second roll,

teeth on said second chucks adapted to engage said second roll to prevent relative rotation therebetween,

means connected to said shaft to control the movement of said shaft and first roll, and

means engaging the periphery of said second roll to control the rotative movement of said Second roll.

2. The structure of claim 1 and including means for holding said chucks from axial movement on said shaft.

3. The structure of claim 2 and in which said holding means comprises collar means.

4. The structure of claim 1 and in which said one chuck adapted to be engaged in the outer end of the first mentioned roll, the chucks adapted to be engaged in the inner adjacent ends of said rolls are in abutting relation, and including a collar engaging the chuck in the outer end of the chuck adapted to be engaged in the second roll to hold said rolls from axial movement.

5. The structure of claim 1 and in which said means connected to said shaft comprises a drive means, and said means engaging the periphery of said second roll includes a drive means.

6. The structure of claim 1 and in which said means connected to said shaft and said means engaging the periphery of said second roll each comprise speed retarding means resisting rotation of said shaft and second roll, respectively.

7. The structure of claim 1 and in which the chucks adapted to extend into the inner adjacent ends of said rolls are in abutting relation, and in which at least one of these chucks includes a bearing surface abutting the other chuck.

References Cited UNITED STATES PATENTS 3,086,726 4/1963 Aaron 242-65 3,188,0l6 6/1965 Aaron 242-56.9 3,222,004 12/1965 CroWe 24256.9

LEONARD D. CHRISTIAN, Primary Examiner. 

1. A DIFFERENTIAL WIND AND REWIND APPARATUS INCLUDING: A SHAFT, MEANS SUPPORTING SAID SHAFT ON A SUBSTANTIALLY HORIZONTAL AXIS, A PAIR OF ROLL SUPPORTING CHUCKS ON SAID SHAFT AND ADAPTED TO SUPPORT A ROLL WITH THE CHUCKS EXTENDING INTO OPPOSITE ENDS THEREOF, TEETH ON SAID CHUCK ADAPTED TO ENGAGE SAID ROLL TO PREVENT RELATIVE ROTATION THEREBETWEEN, MEANS SECURING ONE OF SAID CHUCKS TO SAID SHAFT FOR ROTATION THEREWITH, A SECOND PAIR OF OPPOSED ROLL SUPPORTING CHUCKS ADAPTED TO EXTEND INTO OPPOSITE ENDS OF A SECOND ROLL, TEETH OF SAID SECOND CHUCKS ADAPTED TO ENGAGE SAID SECOND ROLL TO PREVENT RELATIVE ROTATION THEREBETWEEN, MEANS CONNECTED TO SAID SHAFT TO CONTROL THE MOVEMENT OF SAID SHAFT AND FIRST ROLL, AND MEANS ENGAGING THE PERIPHERY OF SAID SECOND ROLL TO CONTROL THE ROTATIVE MOVEMENT OF SAID SECOND ROLL. 